Using methods of solarization, bio fumigation, burning and keep drying soil control root knot nematodes on lettuces, in Lam Dong. Root-knot nematodes (Meloidogyne sp.) are an important plant – parasitc group on green lollo lettuce. Experiments, included solarizion, bio-fumigation, burning and keep drying soil were carried out to control root-knot nematades on lettuces in Lamdong p rovince. | DALAT UNIVERSITY JOURNAL OF SCIENCE Volume 6, Issue 3, 2016 377–386 377 USING METHODS OF SOLARIZATION, BIO-FUMIGATION, BURNING AND KEEP DRYING SOIL CONTROL ROOT- KNOT NEMATODES ON LETTUCES, IN LAM DONG Van Ngoc Thuya, Le Ba Lea, Tran Thi Minh Loana* a The Faculty of Agriculture and Forestry, Dalat University, Lamdong, Vietnam Article history Received: June 02nd, 2016 Received in revised form (1st): July 02nd, 2016 | Received in revised form (2nd): August 02nd, 2016 Accepted: August 28th, 2016 Abstract Root-knot nematodes (Meloidogyne sp.) are an important plant – parasitc group on green lollo lettuce. Experiments, included solarizion, bio-fumigation, burning and keep drying soil were carried out to control root-knot nematades on lettuces in Lamdong province. The results showed that burning method was the most effective (in soil) with only 28 juveniles/100g of soil and after treating compared to the control with 1312 nematodes/100g of soil. The infection proportion of root-knot nematodes () and the number of juveniles of root-knot nematoses (201 juveniles/5g of root) in the burning were the lowest. Therefore, the height and the yield of crop treated with this method were the highest, proved by cm and tons/ha, respestively. In contrast, the root infection proportion in the control was the highest, acounting for while the figures for the height ( cm) and the yield of crop ( tons/ha) were the lowest. Keywords: Bio-smoking; Burning; Drying; Lettuces; Root-knot nematodes; Solariza-tion. 1. INTRODUCTION Green Lollo variety (Lactuca sativa) which is an annual plant of the Chrysanthemum family (Asteraceae), is easy to grow but it is host appropriately for root knot nematodes such as Meloidogyne incognita, M. javanica, M. arenaria, and M. hapla (Westerdahl, Ploeg & Kodira, 2016). There are many methods to prevent nematodes. Same as other diseases, many methods such as biology, physiology, chemical, crop rotation (Ciancio & .
